##############################################################################
#
# PlonePAS - Adapt PluggableAuthService for use in Plone
# Copyright (C) 2005 Enfold Systems, Kapil Thangavelu, et al
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL).  A copy of the ZPL should accompany this
# distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""

This script definitively identifies the gruft scattered throughout CMFPlone.
Usage:

% python seeWhatsOutThere.py foo/bar.py baz.pt

If you pass in paths relative to CMFPlone, only those will be checked, and a
list of GRUFisms will be returned. If no arguments are given, the script will
walk all of CMFPlone and will return a summary count of GRUFisms per file
(.pyc's and .svn dirs are always skipped).

GRUFisms are API in GRUF that aren't in our implementation of PAS. The set of
difference between GRUF and PAS are cached; if PAS changes and you need to
refresh, just delete whatsOutThere.dat or pass in 'refresh' as the first arg.

"""
import os, sys, re
from pprint import pprint
from sets import Set
from os.path import join, isfile
from pickle import dump, load

datafile = 'whatsOutThere.dat'
refresh = sys.argv[1:2] == ['refresh']

# framework is copied over from CMFPlone/tests
if __name__ == '__main__':
    execfile(os.path.join(sys.path[0], 'framework.py'))

if isfile(datafile) and not refresh:

    print "loading cached inspection results ..."
    diff = load(file(datafile))

else:

    if refresh:
        del sys.argv[1]

    # Set up a Plone site. I couldn't get this to work with PloneTestCase but I
    #  imagine that would be the first optimization. Another option would be to
    #  cache the diff in a file, and only refresh the diff if explicitly asked to.
    print 'installing Zope ...'
    import Zope
    from AccessControl.SecurityManagement import newSecurityManager
    app = Zope.app()
    app.acl_users._doAddUser('fooUser', '', ['Manager'], [])
    user = app.acl_users.getUserById('fooUser').__of__(app.acl_users)
    newSecurityManager(None, user)
    app.manage_addProduct['CMFPlone'].manage_addSite('portal')

    # get all the methods from GRUF
    print 'inspecting GRUF ...'
    gruf = Set(dir(app.portal.acl_users))

    # get the API available in the new PAS-based acl_users
    print 'inspecting PAS ...'
    app.portal.manage_delObjects(['acl_users'])
    app.portal.portal_quickinstaller.installProduct('PlonePAS')
    pas = Set(dir(app.portal.acl_users))

    # get the elements which are in GRUF but not PAS
    diff = gruf - pas
    del(app)

    # serialize the info so we don't have to wait for Zope each time
    dump(diff, file(datafile,'w'))

    # tell someone about it
    print """\
    results of our inspections:
      GRUF: %s
      PAS:  %s
      diff: %s"""\
    % (len(gruf), len(pas), len(diff))


# get ready to search through some files
INSTANCE_HOME = os.environ['INSTANCE_HOME']
CMFPLOME = join(INSTANCE_HOME, 'Products', 'CMFPlone')

def sniffFile(abspath):
    """ given an abspath, return a list of GRUFisms """
    text = file(abspath).read()
    attrs = []

    for attr in diff:
        if re.findall(r"\b%s\b" % attr, text):
            if attr not in attrs:
                attrs.append(attr)
    return attrs


tests = sys.argv[1:]
if tests:
    # if we have args then only sniff those files; give verbose output
    print "only checking %s ..." % ', '.join(tests)
    print

    for test in tests:
        abspath = join(CMFPLOME, test)
        attrs = sniffFile(abspath)
        if attrs:
            print test
            print "="*40
            for attr in attrs:
                print attr
        print

elif refresh:
    # if we don't have args then walk the entire CMFPlone tree; output a summary
    totalGRUFiles = totalattrs = 0

    # print the header
    print "no args given, walking all of %s ..." % CMFPLOME
    print
    print "%s  GRUFisms" % ("File".ljust(59))
    print "=" * 79

    # walk the tree
    for p, d, f in os.walk(CMFPLOME):
        for filename in f:

            if not filename.endswith('.pyc') and not p.count('.svn'):

                abspath = join(p, filename)
                plonepath = abspath[len(CMFPLOME)+1:]

                attrs = sniffFile(abspath)

                if attrs:
                    totalGRUFiles += 1
                    numattrs = len(attrs)
                    totalattrs += numattrs
                    print "%s  %s" %\
                        (plonepath[:60].ljust(60), str(numattrs).rjust(4))


    # print the footer
    foo = "TOTAL: %s files" % totalGRUFiles
    bar = str(totalattrs)
    print "-" * 79
    print "%s  %s" % (foo.ljust(60), bar.rjust(4))